—use of a 2,3-dihydroimidazo[1,2-c]
quinazoline compound, or of a pharmaceutical composition containing same, as a sole
active agent, or of a combination of a) said compound or a pharmaceutical composition containing said compound and b) one or more further active agents, for the preparation of a medicament for the treatment or prophylaxis of non-Hodgkin's
lymphoma (NHL), particularly 1st line, 2nd line, relapsed,
refractory, indolent or aggressive non-Hodgkin's
lymphoma (NHL), in particular
follicular lymphoma (FL), chronic
lymphocytic leukaemia (CLL), marginal zone
lymphoma (MZL), diffuse large B-
cell lymphoma (DLBCL), mantle
cell lymphoma (MCL), transformed lymphoma (TL), or
peripheral T-
cell lymphoma (PTCL); —combinations of a) said compound and b) one or more further active agents; —a pharmaceutical composition comprising said compound as a sole
active agent for the treatment of non-Hodgkin's lymphoma (NHL), particularly 1st line, 2nd line, relapsed,
refractory, indolent or aggressive non-Hodgkin's lymphoma (NHL), in particular
follicular lymphoma (FL), chronic
lymphocytic leukaemia (CLL), marginal zone lymphoma (MZL), diffuse large B-
cell lymphoma (DLBCL), mantle
cell lymphoma (MCL), transformed lymphoma (TL), or
peripheral T-
cell lymphoma (PTCL); —a pharmaceutical composition comprising a combination of a) said compound and b) one or more further active agents; —use of biomarkers involved in the modification of the expression of PI3K isoforms, BTK and IKK, BCR activation, BCR downstream activation of NFKB pathway, c-Myc, EZH2, for predicting the sensitivity and / or resistance of a
cancer patient to said compound and providing a rationale-based
synergistic combination as defined herein to increase sensitivity and / or to overcome resistance; and —a method of determining the level of a component of one or more of the expression of PI3K isoforms, BTK and IKK, BCR activation, BCR downstream activation of NFKB pathway, c-Myc, EZH2.